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ICS9248-143 - Frequency Generator & Integrated Buffers

Description

PIN NUMBER 1 2 20 3, 9, 16, 33, 40, 44 4 5 6,14 7 8 10 11 17, 13, 12 15 18 19 21 22 28, 29, 31, 32, 34, 35, 37, 38 30, 36 23 24 25 26 27 39 41 42, 43, 45 46 47 48 P I N NA M E VDDREF S P R E A D 1,2 REF0 PCI_STOP# GND X1 X2 VDDPCI C P U 2 .

5 _ 3 .

Features

  • • 4 - CPUs @ 2.5V/3.3V including 1 free running CPUCLK_F • 9 - SDRAM @ 3.3V • 7 - PCI @ 3.3V, including 1 free running PCICLK_F • 1 - PCI Early @ 3.3V • 1 - 48MHz, @ 3.3V fixed. • 1 - 24/48MHz @ 3.3V • 2 - REF @3.3V, 14.318MHz. Features: • Up to 137MHz frequency support • 97MHz to support high-end AMD processor. • Support power management: CLK, PCI, stop and Power down Mode from I2C programming. • Spread spectrum for EMI control (±.25% & 0 to -0.5% down spread). • Uses external 14.318MHz crysta.

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Datasheet Details

Part number ICS9248-143
Manufacturer Integrated Circuit Systems
File Size 506.42 KB
Description Frequency Generator & Integrated Buffers
Datasheet download datasheet ICS9248-143 Datasheet

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Full PDF Text Transcription

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Integrated Circuit Systems, Inc. ICS9248-143 Frequency Generator & Integrated Buffers for PENTIUM II/IIITM & K6 Recommended Application: 440BX, MX, VIA Apollo Pro 133, Apollo Pro Media or MVP4 style chip set, for Note book applications. Output Features: • 4 - CPUs @ 2.5V/3.3V including 1 free running CPUCLK_F • 9 - SDRAM @ 3.3V • 7 - PCI @ 3.3V, including 1 free running PCICLK_F • 1 - PCI Early @ 3.3V • 1 - 48MHz, @ 3.3V fixed. • 1 - 24/48MHz @ 3.3V • 2 - REF @3.3V, 14.318MHz. Features: • Up to 137MHz frequency support • 97MHz to support high-end AMD processor. • Support power management: CLK, PCI, stop and Power down Mode from I2C programming. • Spread spectrum for EMI control (±.25% & 0 to -0.5% down spread). • Uses external 14.
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